Across
- 2. blood vessel that transports blood away from the heart
- 4. blood vessel that carries blood back to the heart
- 5. The passages that direct air into the lungs
- 8. a cell fragment that plays an important part in forming scabs
- 10. Filters waste from the blood like urea, water, salt and proteins
- 11. help fight disease
- 13. Blood cells that carry oxygen from the lungs to the body cells
- 14. where digestion begins
Down
- 1. absobs water
- 3. An organ that exchanges oxygen and carbon dioxide with the blood
- 4. lower chamber of the heart
- 6. large muscular sac that continues the mechanical and chemical digestion of food
- 7. smallest blood vessel; connect vein and artery
- 9. The basic unit of structure and function in living things
- 12. liquid part of the blood